So I was browsing earlier, checking stuff, when I noticed many websites related to gaming and such have reported that Steam is coming to Ubuntu 12.04. They have every major feature done so far, and are focusing now on small features. L4D2 is going to be downloadable when it comes out for Linux. Here is proof that it is coming. How exciting!

Ubuntu or Linux as a whole? Biggest problem I can see with this is that most Linux games are generally indie developed... not that many big companies release their games for Linux at the moment, since it is considered a minor OS, alongside Mac. I do believe Linux still accounts for less than 2% of the desktop market share, and until this improves, it's unlikely to tempt games companies to port their games to Linux.